fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mmm] [7.5% done] [  7728/  9114 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [10.3% done] [ 12706/  4384 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [12.8% done] [  5997/  9524 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [15.8% done] [ 15038/     0 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [17.5% done] [ 12567/   995 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [20.0% done] [ 11377/  2210 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [23.1% done] [  7529/  5859 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.0% done] [ 10650/  1893 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [28.2% done] [  7257/  6846 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [31.6% done] [  5018/  5573 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  7509/  5542 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  9138/  2726 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  5095/  5457 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  4930/  6150 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  6517/  1450 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.0% done] [  4608/  5853 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.5% done] [  7220/  1243 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  6456/  2035 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  3088/  5432 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  6038/  1613 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4477, got signal=6
Threads: 2: [m_m] [53.5% done] [  3477/  5291 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [54.5% done] [  6562/  1048 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4478, got signal=6
Threads: 1: [m__] [59.5% done] [  8090/     0 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  7773/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4476, got signal=6

fio: (groupid=0): err= 0: pid=4476
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.0%, 4=22.0%, 8=76.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.2%, 20=3.4%, 50=36.1%, 100=12.9%
     lat (msec): 250=32.3%, 500=12.6%, 750=1.2%, 1000=0.7%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4477
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.4%, 4=29.5%, 8=67.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.6%, 10=0.8%, 20=5.7%, 50=19.8%, 100=21.7%
     lat (msec): 250=46.1%, 500=4.6%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4478
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.0%, 4=23.9%, 8=75.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.4%, 10=0.7%, 20=3.3%, 50=17.2%, 100=22.4%
     lat (msec): 250=50.2%, 500=3.9%, 750=0.6%, 1000=0.5%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3588/2251, merge=549/80, ticks=59976/29844, in_queue=89820, util=99.04%
0.32user 0.26system 0:27.23elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2484minor)pagefaults 0swaps